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okd-3.11
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Provision openshift 3.11 with Vagrant
Download README (.md)
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Download README
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okd-3.11
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OKD - 3.11 ========== This **Vagrantfile** create 4 machines, one with the roles "master" and "infra", other two with the "node" role and another one for storage/identity purposes: | Machine | Address | Roles | |---------------------|---------------|---------------| | okd.example.com | 172.27.11.10 | master, infra | | node1.example.com | 172.27.11.20 | node | | node2.example.com | 172.27.11.30 | node | | extras.example.com | 172.27.11.40 | storage, ldap | Everything is installed during the provisioning stage, this means that after the provisioning step, vagrant execute these two commands: ansible-playbook /root/openshift-ansible/playbooks/prerequisites.yml ansible-playbook /root/openshift-ansible/playbooks/deploy_cluster.yml The ansible on master machine is preconfigured with the keys and the hosts to access the other machines without problems. During provisioning step, the preconfigured **inventory** presented in **`files/hosts`** is copied to the master's **`/etc/ansible/hosts`**. NAT --- Some configurations on the inventory **`/etc/ansible/hosts`** was added to overcome problems with default NAT interface that vagrant creates: - etcd_ip - openshift_public_ip - openshift_public_hostname Disabled Services ----------------- - openshift_logging_install_logging - openshift_enable_olm - openshift_enable_service_catalog - ansible_service_broker_install - template_service_broker_install Requirements ------------ From a software point of view, you will need a least **VirtualBox**. From a hardware point of view, each machine uses 2 cpu cores, unless the storage one. The master is configured to use 6GiB of RAM, the node ones 2GiB and the storage 256MiB, so you will need at least 11GiB of RAM, or even less if you lower the memory of each vm. If you disable the **`openshift_metrics_install_metrics`** you can lower the memory from 6GiB to ~2GiB on master, and each node to 1GiB. Installation ------------ This takes a lot of time, just go to the cloned folder and type: vagrant up If you want to access the **webconsole** and/or see metrics you can add the hostnames and ip address on **/etc/hosts**: echo '172.27.11.10 okd.example.com' | sudo tee -a /etc/hosts > On Windows you should modify `c:\Windows\System32\Drivers\etc\hosts` Remeber to access the address [https://hawkular-metrics.172-27-11-10.nip.io](https://hawkular-metrics.172-27-11-10.nip.io) and accept the self-signed certificate. And then access the address [https://okd.example.com:8443](https://okd.example.com:8443). The **username** and **password** are **developer** and **4linux**. Low Memory ---------- If your machine have 8 GB or less of free memory still possible to provision OKD with one machine, disabling the metrics service. To do this clone the repository and do the following: ```bash cd 4542/ mv Vagrantfile old-Vagrantfile mv Allinone Vagrantfile vagrant up ``` In this way only two virtual machines are created, the **master** with 4GB and all services on it and **extras** with NFS and LDAP.
